Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of SUNDAY: OCTOBER 5 , 2008
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 .0 .0 100 .4 .2 200
COTTONWOOD CREEK 7670 .0 .0 100 .5 .3 167
GRAND TARGHEE 9260 .0 -M * .6 -M *
GRANITE CREEK 6770 .2 .0 .7 .2 350
GRASSY LAKE 7265 .1 .0 .7 .4 175
GROS VENTRE SUMMIT 8750 .2 .1 200 .5 .3 167
GUNSIGHT PASS 9820 .3 -M * .3 -M *
LEWIS LAKE DIVIDE 7850 .1 .0 1.0 .3 333
PHILLIPS BENCH 8200 .0 .0 100 .4 .3 133
SALT RIVER SUMMIT 7760 .0 .0 100 .4 .2 200
SNAKE RIVER STATION 6920 .3 .0 .4 .3 133
SPRING CREEK DIVIDE 9000 .0 .0 100 .3 .3 100
THUMB DIVIDE 7980 .3 .0 .5 .2 250
TOGWOTEE PASS 9580 .0 .2 0 .4 .3 133
TWO OCEAN PLATEAU 9240 .4 .3 133 .4 .4 100
WILLOW CREEK 8380 .1 .0 .9 .5 180
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Basin wide percent of average 100 179
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .2 .7 29 .3 .2 150
BLACK BEAR 8170 .0 .4 0 1.3 .3 433
CANYON 7870 .1 .1 100 .0 .2 0
FISHER CREEK 9100 .2 .5 40 .5 .4 125
MADISON PLATEAU 7750 .1 .3 33 .7 .3 233
NORTHEAST ENTRANCE 7350 .0 .0 100 .2 .2 100
PARKER PEAK 9400 .1 .8 12 .2 .3 67
SYLVAN LAKE 8420 .0 .6 0 .4 .3 133
THUMB DIVIDE 7980 .3 .0 .5 .2 250
TWO OCEAN PLATEAU 9240 .4 .3 133 .4 .4 100
WHISKEY CREEK 6800 .1 .1 100 .5 .2 250
WHITE MILL 8700 .2 .3 67 .3 .3 100
WOLVERINE 7650 .1 .0 .1 .3 33
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Basin wide percent of average 34 150
WIND RIVER
BURROUGHS CREEK 8750 .1 .2 50 .1 .2 50
COLD SPRINGS 9630 .1 .3 33 .3 .2 150
DEER PARK 9700 .0 .6 0 .7 .3 233
HOBBS PARK 10100 .2 .6 33 .3 .2 150
LITTLE WARM 9370 .0 .2 0 .3 .2 150
SOUTH PASS 9040 .1 .4 25 .6 .2 300
ST. LAWRENCE ALT 8620 .2 .3 67 .1 .2 50
TOGWOTEE PASS 9580 .0 .2 0 .4 .3 133
TOWNSEND CREEK 8700 .2 .3 67 .5 .3 167
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Basin wide percent of average 29 157
BIGHORN BASIN
BALD MTN. 9380 .1 .9 11 .1 .3 33
BEAR TRAP MEADOW 8200 .1 .2 50 .0 .2 0
BLACKWATER 9780 .0 .9 0 .1 .3 33
BONE SPRINGS DIV 9350 .0 .7 0 .1 .4 25
EVENING STAR 9200 .2 .7 29 .2 .3 67
GRAVE SPRINGS 8550 .1 .3 33 .2 .3 67
KIRWIN 9550 .1 .5 20 .2 .2 100
MARQUETTE 8760 .0 .6 0 .0 .3 0
MIDDLE POWDER 7760 .2 .4 50 .1 .3 33
OWL CREEK 8975 .1 .3 33 .1 .2 50
POWDER RIVER PASS 9480 .1 .4 25 .2 .3 67
SHELL CREEK 9580 .1 .9 11 .4 .3 133
SYLVAN LAKE 8420 .0 .6 0 .4 .3 133
SYLVAN ROAD 7120 .2 .0 .1 .2 50
TIMBER CREEK 7950 .1 .2 50 .2 .2 100
YOUNTS PEAK 8350 .1 .2 50 .0 .3 0
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Basin wide percent of average 17 55
SHOSHONE RIVER
BLACKWATER 9780 .0 .9 0 .1 .3 33
EVENING STAR 9200 .2 .7 29 .2 .3 67
KIRWIN 9550 .1 .5 20 .2 .2 100
MARQUETTE 8760 .0 .6 0 .0 .3 0
SYLVAN LAKE 8420 .0 .6 0 .4 .3 133
SYLVAN ROAD 7120 .2 .0 .1 .2 50
YOUNTS PEAK 8350 .1 .2 50 .0 .3 0
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Basin wide percent of average 11 53
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .2 50 .0 .2 0
BIG GOOSE 7990 .0 .1 0 .0 .3 0
BONE SPRINGS DIV 9350 .0 .7 0 .1 .4 25
BURGESS JUNCTION 7880 .1 .4 25 .0 .3 0
CLOUD PEAK RESERVOIR 9860 .1 .2 50 .4 .4 100
DOME LAKE 8880 .0 .4 0 .1 .3 33
GRAVE SPRINGS 8550 .1 .3 33 .2 .3 67
HANSEN SAWMILL 8360 .0 .1 0 .1 .2 50
MIDDLE POWDER 7760 .2 .4 50 .1 .3 33
POWDER RIVER PASS 9480 .1 .4 25 .2 .3 67
SUCKER CREEK 8880 .0 .4 0 .0 .3 0
TIE CREEK 6870 .0 .1 0 .1 .4 25
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Basin wide percent of average 19 35
BELLE FOURCHE
BLIND PARK 6890 .1 .2 50 .0 .3 0
COLE CANYON 5910 .4 .0 .2 .3 67
NORTH RAPID CREEK 6130 .0 .0 100 .2 .3 67
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Basin wide percent of average 50 44
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 .1 .3 33
DIVIDE PEAK 8880 .0 .3 0 -M .3 *
ELK RIVER 8700 .1 .0 .4 .3 133
JOE WRIGHT 10120 .0 .2 0 .2 .4 50
NORTH FRENCH CREEK 10130 .0 .4 0 .1 .3 33
OLD BATTLE 10000 .0 .4 0 .4 .4 100
SAGE CREEK BASIN 7850 .1 .0 .2 .2 100
SOUTH BRUSH CREEK 8440 .0 .0 100 .1 .3 33
TOWER 10500 .1 .3 33 .2 .4 50
WEBBER SPRINGS 9250 .0 .2 0 .3 .3 100
WILLOW CREEK PASS 9540 .1 .0 .3 .2 150
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Basin wide percent of average 6 74
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .1 .4 25 .0 .3 0
CASPER MTN. 7900 .0 .1 0 .0 .3 0
DEADMAN HILL 10220 .1 .4 25 .1 .3 33
DEER PARK 9700 .0 .6 0 .7 .3 233
LAPRELE CREEK 8375 .0 .1 0 .1 .2 50
RENO HILL 8400 .0 .2 0 .0 .3 0
ROACH 9700 .1 .1 100 .2 .3 67
SAND LAKE 10050 .1 .6 17 .0 .3 0
SOUTH PASS 9040 .1 .4 25 .6 .2 300
WINDY PEAK 7900 .0 .0 100 .0 .2 0
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Basin wide percent of average 17 63
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 .1 .2 50
DIVIDE PEAK 8880 .0 .3 0 -M .3 *
OLD BATTLE 10000 .0 .4 0 .4 .4 100
SANDSTONE RS 8150 .1 .0 .1 .2 50
WHISKEY PARK 8950 .1 .1 100 .3 .3 100
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Basin wide percent of average 13 82
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .1 100 .6 .2 300
BLIND BULL SUM 8650 .0 .0 100 .4 .2 200
EAST RIM DIVIDE 7930 .0 .0 100 .4 .2 200
ELKHART PARK G.S. 9400 .2 .0 .8 .3 267
GROS VENTRE SUMMIT 8750 .2 .1 200 .5 .3 167
GUNSIGHT PASS 9820 .3 -M * .3 -M *
KENDALL R.S. 7740 .1 .0 .4 .2 200
LOOMIS PARK 8240 .1 .0 .6 .2 300
NEW FORK LAKE 8340 .2 .0 .5 .2 250
SNIDER BASIN 8060 .2 .0 .1 .2 50
SPRING CREEK DIVIDE 9000 .0 .0 100 .3 .3 100
TRIPLE PEAK 8500 .2 .0 .2 .3 67
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Basin wide percent of average 150* 185
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100 .2 .2 100
HEWINTA 9519 .0 .1 0 .1 .3 33
HICKERSON PARK 9145 .0 .0 100 .3 .2 150
HOLE-IN-ROCK 9150 .0 .0 100 .1 .2 50
INDIAN CREEK 9425 .0 .1 0 .2 .3 67
KELLEY R.S. 8180 .3 .0 .5 .2 250
STEEL CREEK PARK 10200 .1 .4 25 .2 .3 67
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Basin wide percent of average 17 94
UPPER BEAR RIVER
BUG LAKE 7950 .1 .2 50 .3 .3 100
HAYDEN FORK 9212 .0 .2 0 .5 .3 167
KELLEY R.S. 8180 .3 .0 .5 .2 250
LILY LAKE 9156 .2 .2 100 .5 .3 167
MONTE CRISTO 8960 .0 .3 0 .6 .3 200
SALT RIVER SUMMIT 7760 .0 .0 100 .4 .2 200
TRIAL LAKE 9992 .4 .4 100 .8 .3 267
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Basin wide percent of average 54 189
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the average value for those sites on this day.
Contact your state water supply staff for assistance.
Reference period for average conditions is 1961-90.
Provisional data, subject to revision.
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.